ISO INTERNATIONAL STANDARD 9059 First edition 1990-11-01 Solar energy - Calibration of field pyrheliometers by comparison to a reference pyrheliometer Energie solaire --- Etalonnage des pyrheliometres de terrain par comparaisonaunpyrheliometredereference Reference number ISO 9059:1990(E) No reproduction or networking permited without license from IHS Not for Resale 1S09059:1990(E) Contents Page 1 Scope 2 Normativereference 3 Definitions 4 Calibration hierarchy of pyrheliometers 2 5 Calibrationreguirements 6 Calibrationprocedure 3 7 Uncertainty 8 Documentation Annexes A Calculated percentages of circumsolarradiation contained in direct solar radiation B Bibliography CISO1990 All rights reserved.Nopart ofthispublicationmaybereproducedorutilized inanyform orbyanymeans,electronlcormechanical,includingphotocopyingandmicrofilm,without permlssioninwritingfromthepublisher. International Organization for Standardization CasePostale56.CH-1211Geneve20·Switzerland Printed in Switzeriand or Standardizatio No reproduction or networking permited withoutlicense from IHS Not for Resale ISO9059:1990(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (iso member bodies). The work of preparing International Standards is normally carried out through Iso technical committees.Eachmember bodyinterestedina subjectfor which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with isO, also take part in the work. Iso coflaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical commitees are circulated to the member bodies for voting. Publication as an Inter- national Standard requires approval by at least 75% of the member bodies casting a vote. International Standard iso 9059 was prepared by Technical Committee ISO/TC 180, Solar energy. Annexes A and B of this International Standard are for information only. i No reproduction or networking permited without icense from IHS Not fr Resale